The San Francisco River is a 159-mile-long (256 km) river in the southwest United States, the largest tributary of the Upper Gila River. The river originates near Alpine, Arizona and flows into New Mexico before re-entering Arizona and joining the Gila downstream from Clifton, Arizona.
Coordinates: 33°50′55″N 109°08′56″W / 33.8486183°N 109.1489245°W